iproute2: bump to version 4.0.0

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/iproute2/iproute2.hash

@@ -1,2 +1,2 @@
 # From https://kernel.org/pub/linux/utils/net/iproute2/sha256sums.asc
-sha256	e2f9f8c36e166f2ba6c0e1e7a9ad84cdf7c1615b93df49dac44563d7b57fd7b0	iproute2-3.19.0.tar.xz
+sha256	5cd06eb1050b858b308b65705725042bb566fd261135e35a73dafb48cd632618	iproute2-4.0.0.tar.xz

package/iproute2/iproute2.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-IPROUTE2_VERSION = 3.19.0
+IPROUTE2_VERSION = 4.0.0
 IPROUTE2_SOURCE = iproute2-$(IPROUTE2_VERSION).tar.xz
 IPROUTE2_SITE = $(BR2_KERNEL_MIRROR)/linux/utils/net/iproute2
 IPROUTE2_DEPENDENCIES = host-bison host-flex